<template>
  <div>  <!--  面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!--    提示区域-->
      <el-alert
        title="添加商品信息"
        type="info"
        show-icon
        center
        :closable="false"
      >
      </el-alert>
      <!--   步骤条区域-->
      <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!--      tab栏区域-->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="100px"
               label-position="top"
      >
        <el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="">
              <el-cascader
                expand-trigger="hover"
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!--    渲染表单的item项-->
            <el-form-item :label="item.attr_name"
                          v-for="item in manyTableData"
                          :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="item1"
                             v-for="(item1,index1) in item.attr_vals"
                             :key="index1"
                             border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name"
                          v-for="item in onlyTabData"
                          :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!--            action表示图片要上传到后台的API地址-->
            <el-upload
              :action="uploadURl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj" :on-success="handleSuccess">
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!--            富文本编辑器组件-->
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <!--  添加商品按钮-->
            <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!--    图片预览区域-->
    <el-dialog
      title="图片预览"
      :visible.sync="previewVisible"
      width="50%"
    >
      <img :src="previewPath">
    </el-dialog>
  </div>
  <!--  卡片视图区域-->
</template>

<script>
import { getCateList } from '@/api/cate'
import { add, tabClicked } from '@/api/list'
import _ from 'loadsh'

export default {
  name: 'Add',
  data () {
    return {
      activeIndex: '0',
      // 添加商品的扁担数据对象
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        //  图片的数组
        pics: [],
        //  商品详情描述
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          {
            required: true,
            message: '请输入商品名称',
            trigger: 'blur'
          }
        ],
        goods_price:
          [
            {
              required: true,
              message: '请输入商品价格',
              trigger: 'blur'
            }
          ],
        goods_weight:
          [
            {
              required: true,
              message: '请输入商品重量',
              trigger: 'blur'
            }
          ],
        goods_number:
          [
            {
              required: true,
              message: '请输入商品数量',
              trigger: 'blur'
            }
          ],
        goods_cat: [
          {
            required: true,
            message: '请选择商品分类',
            trigger: 'blur'
          }
        ]
      },
      //  商品分类列表
      cateList: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      // 动态参数列表数据
      manyTableData: [],
      //  静态属性列表数据
      onlyTabData: [],
      //  上传图片的URL地址
      uploadURl: 'http://42.192.129.12:8888/api/private/v1/upload',
      //  图片上传组件的headers请求头对象
      headerObj: {
        Authorization: window.sessionStorage.getItem('TOKENKEY')
      },
      previewPath: '',
      previewVisible: false
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    async getCateList () {
      const res = await getCateList()
      if (res.data.meta.status !== 200) {
        this.$message.error('获取商品分类数据失败')
      }
      this.cateList = res.data.data
      // console.log(res)
    },
    //  级联选择器选中项变化，会触发这个函数
    handleChange () {
      // console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    //
    beforeTabLeave (activeName, oldActiveName) {
      // console.log('即将离开标签页的名字是' + oldActiveName)
      // console.log('即将进入标签页的名字是' + activeName)
      // return false
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    async tabClicked () {
      // console.log(this.activeIndex)
      // 证明访问的是动态参数面板
      if (this.activeIndex === '1') {
        // console.log('动态参数面板')
        const res = await tabClicked(this.cateId, { sel: 'many' })
        if (res.data.meta.status !== 200) {
          this.$message.error('获取动态参数列表失败')
        }
        console.log(res.data.data)
        res.data.data.forEach(item => {
          item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data.data
      } else if (this.activeIndex === '2') {
        const res = await tabClicked(this.cateId, { sel: 'only' })
        if (res.data.meta.status !== 200) {
          return this.$message.error('获取静态属性失败')
        }
        console.log(res.data.data)
        this.onlyTabData = res.data.data
      }
    },
    //  处理图片预览效果
    handlePreview (file) {
      console.log(file)
      this.previewPath = file.response.data.url
      this.previewVisible = true
    },
    //  处理移除图片的操作
    handleRemove: function (file) {
      // console.log(file)
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(item => item.pic === filePath)
      this.addForm.pics.splice(index, 1)
      // console.log(this.addForm)
    },
    //  监听图片上传成功的事件
    handleSuccess (response) {
      // console.log(response)
      const picInfo = {
        pic: response.data.tmp_path
      }
      this.addForm.pics.push(picInfo)
      // console.log(this.addForm)
    },
    // 添加商品
    add () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请填写必要的表单项')
        }
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        console.log(form)
        //  处理动态参数
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        //  处理静态属性
        this.onlyTabData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        // console.log(form)
        const res = await add(form)
        // console.log(res)
        if (res.data.meta.status !== 200) {
          this.$message.error('添加商品失败')
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId () {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style scoped>

</style>
